Perhaps you should try some spelling variations:
ptong tienh » phong tinh
thuoc sach » hoc sach, nuoc sach, thuat sach
tong tien » trong tien, dong tien, trong tieng
sach han » sach tham, sach danh, sach nang
co ptong » co phong, co tong, co xuong
giai can » giai han, giai san, giai ca
can tong » han tong, ban tong, can dong
ve gioi » ve giai, vien gioi, van gioi
gioi co » nguoi co
su sach » so sach, vu sach
sach tu » sach thu, cach tu, sach ty
le giai » de giai, ly giai, ve giai
han ve » hanh ve, phan ve, hang ve
tu le » vu le, tu te

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( thuoc sach han ve gioi co ptong tienh ) or ( su sach tu le giai can tong tien ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( thuoc sach han ve gioi co ptong tienh ) OR ( su sach tu le giai can tong tien )).
• Adding a wildcard symbol may retrieve word variants: (( thuoc sach han ve gioi co ptong tienh ) or ( su sach tu le giai can tong tien ))*.